@article{NSJOM_1989_19_1a_13,
     author = {Fisher Brian},
     title = {On two definitions of the 

 non-commutative convolution product of distributions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {159-165},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1989},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1989_19_1a_13/}
}